'''斐波拉契数列'''
# def fun(n):
#     if n<=2:
#         return 1
#     else:
#         return fun(n-1)+fun(n-2)
# for i in range(1,7):
#     print(fun(i))
lst=list([1,2,3,4,5])
print(len(lst))
str='helloword'
print(len(str))